This is the Poisson distribution with lamda=14 The mean and variance of the Poisson distribution is lamda So for this problem ... mu=sigma^2=14 Standard Deviation =sqrt (lamda)=sqrt14 …

A red container contains 7 items of which 2 are new and 5 are old items. A purple container contains 4 items of which 1 is new and 3 are old items. An item is drawn at random from each …

The more abundant an isotope is, the more it will contribute to the average atomic mass of the element. color (blue) ("avg. atomic mass" = sum_i "isotope"_i xx "abundance"_i) In the actual …

P (x=224) is exactly P (x<=224) is at most p (x=224) close to 0 p (x<=224) close to 1 I suppose given no additional information the probability of a person showing up is 50/50 although I …

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31/48 = 64.583333% = 0.6453333 The first step in solving this problem is figuring out the total amount of kids so you can figure out how many kids went to Europe over how many kids you …

Of the 232 airports available for public use in Themeliville, 121 are paved and lighted. For a simple random sample of 50, what is the probability that between 27 and 31 of the airports in …

55/406 Think about one bulb being taken out at a time. Once one has been removed, there will be one less, so the probability for the second bulb changes. For both bulbs to be red we want: …

This is a counting exercise. P(10)= 1/12 Since the dice (number cubes) each have six sides, there are: 6 * 6 = 36 possible outcomes for rolling two of them together. Which of these add to 10? 6 …